allow only number and decimal in input[type=text], comma separate on blur, convert comma separate on focus

allow only number and decimal in input[type=text]

	//set number to zero if it's null or empty for number field.
	function numberFieldChangedEvent(field, fieldName, model, invalid) {
		field = field.replace(/[^(0-9.)]/g, ''); //allow only numbers and dots
		model[fieldName] = field;
	}
	
	function commaSeparateNum(field, fieldName, model) {
		// remove extra dots
		var tempString = field.toString();
		if (tempString.indexOf('.') !== -1) {
			var beforeDot = tempString.substring(0, tempString.indexOf('.')+1);
			var afterDot = tempString.substr(tempString.indexOf('.')+1);
			afterDot = afterDot.split('.').join('');
			var tempNum = parseFloat(beforeDot + afterDot);
			model[fieldName] = $filter('number')(tempNum, 5);
		} else {
			model[fieldName] = $filter('number')(field, 5);
		}
	};
	
	function convertToNum(field, fieldName, model) {
		model[fieldName] = parseFloat(field.replace(/,/g,''));
	};